Lydia Ackland was nearly blind when she fell downstairs and was killed. Her grandchildren have always accepted the official verdict – accident. Besides, they have their own problems: beautiful Kate is ending a love-affair; her brother Daniel is painfully crippled.

But then that letter comes to light. Only days before her death, somebody wrote and warned their grandmother that she was ‘opening a disastrous Pandora’s Box’ and should ‘let sleeping, and perhaps dangerous, dogs lie’. The letter goads Kate and Daniel into asking lots of questions.

First, who wrote it? And why does the answer, once discovered, point to their arrogant Uncle Mark, who, with his ambitious wife Helen, has inherited Longwater, the vast family estate, and the vast fortune that goes with it.

Why were Mark and Helen banished from England in their youth and what are the secrets behind their long European exile? Kate follows their footsteps through Italy and Corsica, while Daniel continues to ask questions in England. Within days, both their lives have been threatened, confirming their suspicions that all is not a it seems – and perhaps never has been…